[RFC 0/4] wwan framework netdev creation

Here's a respin of the series to create netdevs through the WWAN
framework. I haven't tested it at all, since I don't have any
such hardware, so I guess there will be some bugs ... It'd be
best if somebody else takes over here, Loic, maybe I can talk
you into getting the generic bits done if you have a test case? :)

This applies on top of the IOSM driver series posted here:
https://lore.kernel.org/r/20210520140158.10132-1-m.chetan.kumar@intel.com (local)

I've included the first bugfix patch only so it actually all
can apply properly, not really needed for review.

johannes